Replacing One Part in Space Starts With Purging Nitrogen From Your Blood
A spacewalk to swap out a single component on the ISS usually runs 5 to 8 hours. Before that, astronauts spend hours breathing pure oxygen to purge nitrogen from their bodies, and rack up roughly 7 hours of pool training for every hour they'll spend outside. SORABUMI walks through what 'fixing something' really means in orbit, starting from the prep work.